Have you paid much attention to your running form?

來源: 7grizzly 於 2014-11-13 10:51:40 [檔案] [博客] [舊帖] [給我悄悄話] 閱讀數 : (0 bytes)

回答: Do you do a lot of heel striking? 由 7grizzly 於 2014-11-13 10:47:30

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